Tsawg-VOC / Solvent-dawb Epoxy Curing: MTHPA Hloov Kho & Daim Ntawv Qhia Daim Ntawv Thov

Raws li qis-VOC, qis- tsw thiab hnyav- kev tsim khoom dawb dhau los ua qhov yuav tsum tau ua hauv paus, epoxy curing yog txav deb ntawm "cov kuab tshuaj dilution rau ntws" mus rau kev tsim- thiab - txheej txheem co- kev ua kom zoo. Rau kev sib xyaw, hluav taws xob rwb thaiv tsev casting thiab hluav taws xob potting, anhydride curing tseem yog txoj hauv kev ua tsaug rau qhov tsis muaj zog, txo qis hauv kev ntxhov siab thiab muaj zog dielectric kev ua tau zoo.
MTHPA (Methyl Tetrahydrophthalic Anhydride) feem ntau yog txheej txheem -kev xaiv tus phooj ywg anhydride rau cov kuab tshuaj- cov tshuab dawb: nws tuaj yeem pab txhawb kev ua haujlwm tau zoo thiab ntub dej- tawm yam tsis muaj kev cia siab rau cov kuab tshuaj, thaum ua kom tswj tau thermal curing los ntawm kev xaiv catalyst thiab staged kho profiles-pab cuam tshuam rau kev tswj thiab kev sib tsoo.
Dab tsi yog hloov kho rau qis -VOC / Solvent- Kev Siv Dawb
Mus txog daim ntawv thov viscosity nrog qis -viscosity epoxies thiab reactive diluents es tsis txhob ntawm cov kuab tshuaj, kom txo tau cov volatile qhov chaw.
Kho cov npuas thiab kev ntxhov siab sab hauv raws li cov kev pheej hmoo zoo tshaj plaws: txhim kho kev sib xyaw ua ke, lub tshuab nqus tsev / zoo li qub degassing thiab ua ntej - cua sov kom txo cov pinholes thiab ib nrab - paug txaus ntshai.
Siv staged kho ntxiv rau tom qab-kho: qis-kub theem rau ntws thiab cua tso tawm, nruab nrab-theem rau lub zog tsim- nce, siab- kub tom qab- kho rau Tg thiab tshav kub tsis kam (validate vs. thickness/exotherm).
Txaus siab rau "tswj acceleration" nyob rau hauv catalyst systems kom tau raws li takt lub sij hawm tsis muaj ntau exotherm, shrinkage kev nyuaj siab los yog brittleness.
Daim ntawv qhia txog kev siv Case
Composites (cua hniav / FRP / pultrusion / filament winding): ua ntej ntub dej - tawm, exotherm tswj thiab Tg-toughness tshuav; txo qhov tsis xws luag ua ntej, ces optimize lub sij hawm voj voog.
Hluav taws xob casting (CT / PT / transformers / rwb thaiv tsev qhov chaw): tsom rau dielectric kev ua tau zoo thiab tsis tshua muaj kev ntxhov siab; siv cov kev txuag ramp tus nqi rau cov tuab tuab thiab tswj kev degassing thiab noo noo tswj.
Electronic potting (modules/components): qhia txog batch zoo ib yam, tsis tshua muaj ionic impurities thiab kev ntsuam xyuas kev ntseeg tau; zam kev kho mob sai heev uas tuaj yeem ua rau thermal poob siab thiab kev ntxhov siab.
Nco tseg: Cov lus luv luv no muab cov lus qhia dav dav engineering. Kev tsim kho zaum kawg thiab cov sijhawm kho yuav tsum raug txheeb xyuas nrog koj cov khoom siv raw specs, ib feem geometry, cov cuab yeej muaj peev xwm, thiab SDS / EHS cov cai.
FAQ
Q: Puas yog MTHPA haum rau cov kuab tshuaj -dawb epoxy systems?
A: Yog. Cov kuab tshuaj-kev siv dawb yog feem ntau ua tiav los ntawm qis-viscosity epoxies/reactive diluents ntxiv rau cov txheej txheem tswj, ntau dua li cov kuab tshuaj dilution.
Q: Dab tsi yog qhov kev pheej hmoo zoo tshaj plaws hauv cov kuab tshuaj -cov tshuab pub dawb?
A: Cov cua nkag (pinholes), exotherm-tsav kev ntxhov siab / tawg, thiab hauv qab - kho qhov sib txawv. Ua ntej sib tov, degassing thiab staged kho optimization.
Q: Yuav ua li cas composites txawv los ntawm hluav taws xob casting nyob rau hauv kev kho lub tswv yim?
A: Composites qhia txog kev ntub dej - tawm thiab kev ua haujlwm zoo; hluav taws xob casting hais txog kev ua haujlwm ntawm dielectric, qis shrinkage thiab tsis tshua muaj kev ntxhov siab. Thick castings xav tau ntau qhov kub thiab txias ramps.